London train stations have been home to many a flash mob—dancing in unison, karaoke en masse—but a "fash mob"? Color us intrigued. Naturally we had to dash over to St. Pancras Station yesterday afternoon for the Chanel Fash Mob, a Coco-centric event organized by QueensofVintage.com. As commuters and tourists gaped, Chanel-philes outfitted in pearls and boucle jackets mingled and preened for the cameras, some clutching double-C bags, others bottles of Chanel No. 5. The only bummer: not finding a Karl Lagerfeld lookalike boyfriend to take home to Mom and Dad.